US12462943B2ActiveUtilityA1

Purification process for the preparation of non-carrier added copper-64

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Assignee: CURIUM US LLCPriority: Sep 3, 2020Filed: Apr 21, 2025Granted: Nov 4, 2025
Est. expirySep 3, 2040(~14.2 yrs left)· nominal 20-yr term from priority
Inventors:Brian RegnaAllan CasciolaLauren RadfordShaun LovelessDavid PipesWilliam UhlandCraig Brunkhorst
G21G 4/08A61K 51/0482G21G 2001/0094C01G 3/003G21G 1/10G21G 1/001
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PatentIndex Score
0
Cited by
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References
30
Claims

Abstract

Compositions comprising high levels of high specific activity copper-64, and process for preparing said compositions. The compositions comprise from about 2 Ci to about 15 Ci of copper-64 and have specific activities up to about 3800 mCi copper-64 per microgram of copper. The processes for preparing said compositions comprise bombarding a nickel-64 target with a low energy, high current proton beam, and purifying the copper-64 from other metals by a process comprising ion exchange chromatography or a process comprising a combination of extraction chromatography and ion exchange chromatography.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A composition for use as a radioactive precursor comprising from 2 Ci to 15 Ci of copper-64 ( 64 Cu), and having a specific activity of at least about 25 mCi  64 Cu/μg Cu, wherein the composition comprises chemical and radionuclidic purities suitable for positron emission tomography (PET). 
     
     
         2 . The composition of  claim 1 , wherein the composition has a specific activity of at least about 30 mCi  64 Cu/μg Cu. 
     
     
         3 . The composition of  claim 1 , wherein the composition has a specific activity of at least about 35 mCi  64 Cu/μg Cu. 
     
     
         4 . The composition of  claim 1 , wherein the composition has a specific activity of at least about 40 mCi  64 Cu/μg Cu. 
     
     
         5 . The composition of  claim 1 , wherein the composition has a specific activity of at least about 45 mCi  64 Cu/μg Cu. 
     
     
         6 . The composition of  claim 1 , wherein the composition has a specific activity of at least about 50 mCi  64 Cu/μg Cu. 
     
     
         7 . The composition of  claim 1 , wherein the composition has a specific activity of at least about 55 mCi  64 Cu/μg Cu. 
     
     
         8 . The composition of  claim 1 , wherein the composition has a specific activity of at least about 60 mCi  64 Cu/μg Cu. 
     
     
         9 . The composition of  claim 1 , wherein the composition has a specific activity of at least about 65 mCi  64 Cu/μg Cu. 
     
     
         10 . The composition of  claim 1 , wherein the composition has a specific activity of at least about 70 mCi  64 Cu/μg Cu. 
     
     
         11 . The composition of  claim 1 , wherein the composition has a specific activity of at least about 75 mCi  64 Cu/μg Cu. 
     
     
         12 . The composition of  claim 1 , wherein the composition has a specific activity of at least about 80 mCi  64 Cu/μg Cu. 
     
     
         13 . The composition of  claim 1 , wherein the composition has a specific activity of at least about 85 mCi  64 Cu/μg Cu. 
     
     
         14 . The composition of  claim 1 , wherein the composition has a specific activity of at least about 90 mCi  64 Cu/μg Cu. 
     
     
         15 . The composition of  claim 1 , wherein the composition has a specific activity of at least about 95 mCi  64 Cu/μg Cu. 
     
     
         16 . The composition of  claim 1 , wherein the composition has a total content of trace metals of less than about 6 parts per million (ppm), the trace metals being cobalt, copper, gold, iron, lead, mercury, nickel, and zinc. 
     
     
         17 . The composition of  claim 1 , wherein the composition has a total content of trace metals of less than about 5 parts per million (ppm), the trace metals being cobalt, copper, gold, iron, lead, mercury, nickel, and zinc. 
     
     
         18 . The composition of  claim 1 , wherein the composition has a total content of trace metals of less than about 3 parts per million (ppm), the trace metals being cobalt, copper, gold, iron, lead, mercury, nickel, and zinc. 
     
     
         19 . The composition of  claim 1 , wherein the composition has a total content of less than about 6 parts per million (ppm) of copper-67 ( 67 Cu). 
     
     
         20 . The composition of  claim 1 , wherein the composition has a total content of less than about 1 parts per million (ppm) of  67 Cu. 
     
     
         21 . The composition of  claim 1 , wherein the composition has a total content of less than about 6 parts per million (ppm) of zinc-68 ( 68 Zn). 
     
     
         22 . The composition of  claim 1 , wherein the composition has a total content of less than about 1 parts per million (ppm) of  68 Zn. 
     
     
         23 . The composition of  claim 1 , wherein the composition has a total content of less than about 6 parts per million (ppm) of any isotope with a mass number of 67. 
     
     
         24 . The composition of  claim 1 , wherein the composition has a total content of less than about 6 parts per million (ppm) of any isotope with a mass number of 68. 
     
     
         25 . The composition of  claim 1 , wherein the radionuclidic purity of the  64 Cu is greater than 98.5%. 
     
     
         26 . The composition of  claim 1 , wherein the radionuclidic purity of the  64 Cu is greater than 99.5%. 
     
     
         27 . The composition of  claim 1 , wherein the composition has a total content of trace metals of 0 ppm Au, 0 ppm Hg, <0.02 ppm Co, <0.2 ppm Fe, <0.4 ppm Pb, <0.5 ppm Ni, <0.6 ppm Cu, and <1.5 ppm Zn. 
     
     
         28 . The composition of  claim 1 , wherein the composition further comprises a chelating agent or a bifunctional chelating agent in which the  64 Cu is coordinated therein, and the chelating agent or the bifunctional chelating agent is a macrocyclic compound, a bridged macrocyclic compound, a bicyclic compound, or an acyclic compound. 
     
     
         29 . The composition of  claim 28 , wherein the bifunctional chelating agent is DOTA. 
     
     
         30 . The composition of  claim 28 , wherein the chelating agent is DOTAGA.

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